JP2012094275A - 点灯装置および、これを用いた照明器具 - Google Patents
点灯装置および、これを用いた照明器具 Download PDFInfo
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- JP2012094275A JP2012094275A JP2010238400A JP2010238400A JP2012094275A JP 2012094275 A JP2012094275 A JP 2012094275A JP 2010238400 A JP2010238400 A JP 2010238400A JP 2010238400 A JP2010238400 A JP 2010238400A JP 2012094275 A JP2012094275 A JP 2012094275A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/375—Switched mode power supply [SMPS] using buck topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/385—Switched mode power supply [SMPS] using flyback topology
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/39—Circuits containing inverter bridges
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
【解決手段】直流電流I1を出力する点灯部31と、点灯部31が出力する直流電流I1を平滑したLED電流I2を光源6に供給するコンデンサC6と、チョッパ動作期間T1とチョッパ動作停止期間T2とを交互に繰り返すPWM制御を行う制御部4と、チョッパ動作期間T1とチョッパ動作停止期間T2との和を1周期T0とする周波数fp(Hz)と、コンデンサC6の容量C6p(μF)との乗算値を、0.05以上にする。
【選択図】図1
Description
本実施形態の点灯装置1の概略構成図を図2に示す。
このように、PWM信号S2の周波数fp(Hz)と、コンデンサC6の容量C6p(μF)との乗算値を0.05以上にすることで、LED電流I2のリップル率を15%以内にすることができる。LED電流I2のリップル率を15%以内に設定することで、光源6が照射する環境下でビデオカメラで撮影した映像をモニターで確認した場合でも、LED電流I2の最大値Imaxと最小値Iminとの差が小さいので、人間の目にはちらつきを感じない。
本実施形態の照明器具8は、実施形態1の点灯装置1と、光源6とで構成されている。図6に、照明器具8の概略断面図を示す。
3 降圧チョッパ回路
4 制御回路
6 光源
21 フィルタ回路
22 整流平滑回路
31 点灯部
32 平滑部
40 制御電源回路
41 制御用集積回路
61 LED素子
Claims (3)
- 直流電流を出力する点灯部と、
前記点灯部が出力する前記直流電流を平滑した平滑電流を、光源に供給するコンデンサで構成される平滑部と、
前記直流電流を前記平滑部に供給する第1の期間と、前記第1の期間よりも前記直流電流を低減させる第2の期間とを交互に繰り返す断続制御を行う制御部と、
前記第1の期間と前記第2の期間との和を1周期とする周波数(Hz)と、前記コンデンサの容量(μF)との乗算値を、0.05以上にすることを特徴とする点灯装置。 - 前記平滑電流のリップル率を15%以下にすることを特徴とする請求項1記載の点灯装置。
- 請求項1または2記載の点灯装置と、
前記点灯装置の前記平滑電流によって点灯する光源とを備えることを特徴とする照明器具。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010238400A JP5760169B2 (ja) | 2010-10-25 | 2010-10-25 | 点灯装置および、これを用いた照明器具 |
EP11008384.7A EP2451247B1 (en) | 2010-10-25 | 2011-10-18 | Lighting device and illumination apparatus using same |
US13/277,468 US9398648B2 (en) | 2010-10-25 | 2011-10-20 | Lighting device and illumination apparatus using same |
CN201110325374.7A CN102573207B (zh) | 2010-10-25 | 2011-10-24 | 点亮装置和具有该点亮装置的照明设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010238400A JP5760169B2 (ja) | 2010-10-25 | 2010-10-25 | 点灯装置および、これを用いた照明器具 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012094275A true JP2012094275A (ja) | 2012-05-17 |
JP5760169B2 JP5760169B2 (ja) | 2015-08-05 |
Family
ID=44992447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010238400A Active JP5760169B2 (ja) | 2010-10-25 | 2010-10-25 | 点灯装置および、これを用いた照明器具 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9398648B2 (ja) |
EP (1) | EP2451247B1 (ja) |
JP (1) | JP5760169B2 (ja) |
CN (1) | CN102573207B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014059992A (ja) * | 2012-09-14 | 2014-04-03 | Toshiba Lighting & Technology Corp | 照明装置 |
Families Citing this family (8)
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WO2014047668A2 (de) * | 2012-09-28 | 2014-04-03 | Tridonic Gmbh & Co Kg | Betriebsschaltung mit getaktetem konverter zur ansteuerung einer led-strecke |
JP6131511B2 (ja) * | 2012-10-10 | 2017-05-24 | パナソニックIpマネジメント株式会社 | 点灯装置およびそれを用いた照明器具 |
EP2741578B1 (en) * | 2012-12-07 | 2017-06-07 | Nxp B.V. | LED current and dimming control using hysteresis comparatoradjustment of hysteresis upper and lower threshold levels |
AT14074U1 (de) | 2013-04-30 | 2015-04-15 | Tridonic Gmbh & Co Kg | Betriebsschaltung für LED |
AT13981U1 (de) * | 2013-04-30 | 2015-02-15 | Tridonic Gmbh & Co Kg | Betriebsschaltung für Leuchtdioden |
CN104684171B (zh) * | 2013-12-02 | 2017-05-24 | 神讯电脑(昆山)有限公司 | 发光二极管的驱动电路及驱动方法 |
CN104869685A (zh) * | 2014-02-25 | 2015-08-26 | 群光电能科技股份有限公司 | 可改变输出电流的发光二极管驱动装置及其方法 |
KR102583828B1 (ko) * | 2018-09-19 | 2023-10-04 | 삼성디스플레이 주식회사 | 액정 표시 장치 및 이의 구동 방법 |
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2010
- 2010-10-25 JP JP2010238400A patent/JP5760169B2/ja active Active
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2011
- 2011-10-18 EP EP11008384.7A patent/EP2451247B1/en not_active Not-in-force
- 2011-10-20 US US13/277,468 patent/US9398648B2/en not_active Expired - Fee Related
- 2011-10-24 CN CN201110325374.7A patent/CN102573207B/zh not_active Expired - Fee Related
Patent Citations (4)
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JP2003070244A (ja) * | 2001-06-15 | 2003-03-07 | Murata Mfg Co Ltd | 自励式チョッパレギュレータ、それに用いる電圧制御モジュールおよびそれを用いた電子機器 |
JP2004119078A (ja) * | 2002-09-24 | 2004-04-15 | Toshiba Lighting & Technology Corp | Led点灯装置 |
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Cited By (1)
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JP2014059992A (ja) * | 2012-09-14 | 2014-04-03 | Toshiba Lighting & Technology Corp | 照明装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2451247B1 (en) | 2014-07-16 |
JP5760169B2 (ja) | 2015-08-05 |
CN102573207B (zh) | 2015-03-25 |
US9398648B2 (en) | 2016-07-19 |
CN102573207A (zh) | 2012-07-11 |
US20120098453A1 (en) | 2012-04-26 |
EP2451247A1 (en) | 2012-05-09 |
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